32 BRAKES NOTE : WHILE FITTING THE PRIMARY BACK SEALS, MAKE SURE THAT THE LIPS OF THE SEALS ARE FACING FORWARD Actuate the primary plunger assembly for couple of times and check for the quick return of the plungers. Fit a new ’O’ ring in the groove on the mounting flange of the body. Fit grommet into both inlet ports by liberally lubricating the same with fresh brake fluid. Fit fluid collection tray on to the fluid reservoir outlets and position the same into the grommets and slightly rocking them on to the either side, press it home. NOTE: It is essential that the reservoir filler cap must be removed. The baffle and baffle cover taken out from its place and the breather hole in the cap is cleared and the baffle and the baffle cover refitted before fitting the filler cap on to the tank. It is advisable to replace the rubber washer in the filler cap during every overhaul. Now the tandem master cylinder is ready for fitment on to the servo. DO NOT ALTER THE HEIGHT OF THE OUTPUT PUSH ROD OF THE VACUUM BOOSTER UNIT. The Tandem Master Cylinder is to be fitted back on to the vacuum booster in the reverse order of removal. Reconnect the outlet pipes and bleed the system. Tighten mounting nuts to specified torque. Connect the outlet pipes to the master cylinder, tighten the coupling nut to the specified torque. Fill the reservoir with recommended brake fluid and bleed the system. Check for brake fluid leakage. TANDEMMASTERCYLINDER FORABSVERSION Introduction : The center valve master cylinder, suitable for ABS system is made of aluminum body with the brake fluid reservoir coupled on to the master cylinder. The tandem master cylinder is designed to operate dual line hydraulic system. It consist of two independent hydraulic chambers working in series and should one chamber or circuit develop a fault, the other remains operative. Removal Dismantling overhauling & servicing of Tandem Master Cylinder is not recommended. Therefore Fig. 33 CV / CV Tandom Master Cylinder for ABS VALVE PIN PRIMARY GLAND SEAL SPRING (POPPET) POPPET VALVE ASSY CONNECTING PIN RECUPERATING SEAL (PRIMARY) STOP WASHER CIRCLIP PRIMARY PLUNGER PRIMARY SPRING SPRING RETAINER PISTON WASHER (RETAINING) RETAINER STOP PIN
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